Home / 639,045.85-957,839.89-399,270.01

Finding the Fourth Proportional to 639,045.85, 957,839.89 and 399,270.01

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Solution

The fourth proportional to 639,045.85, 957,839.89 and 399,270.01 is: 598,449.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,045.85 : 957,839.89 = 399,270.01 : x
  2. Step 2: Convert to fraction form
    639,045.85/957,839.89 = 399,270.01/x
  3. Step 3: Cross multiply
    639,045.85x = 957,839.89 × 399,270.01
  4. Step 4: Simplify right side
    639,045.85x = 382,436,740,462.35
  5. Step 5: Solve for x
    x = 382,436,740,462.35/639,045.85
  6. Step 6: Final answer
    x = 598,449.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.